Fatigue performance of friction stir welded marine grade steel

Helena Polezhayeva; Athanasios Toumpis; Alexander Galloway; Lars Molter; Bilal Ahmad; Michael E. Fitzpatrick

doi:10.1016/j.ijfatigue.2015.08.003

Fatigue performance of friction stir welded marine grade steel

Helena Polezhayeva, Athanasios Toumpis, Alexander Galloway, Lars Molter, Bilal Ahmad, Michael E. Fitzpatrick

Mechanical And Aerospace Engineering

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

197 Downloads (Pure)

Abstract

An extensive study on the fatigue performance of friction stir welded DH36 steel was carried out. The main focus of this experimental testing programme was fatigue testing accompanied by tensile tests, geometry measurements, hardness and residual stress measurements, and fracture surface examination. The S-N curve for friction stir butt welded joints was generated and compared with the International Institute of Welding recommendations for conventional fusion butt welds. Friction stir welds of marine grade steel exceeded the relevant rules for fusion welding. This newly developed S-N curve is being proposed for use in the relevant fatigue assessment guidelines for friction stir welding of low alloy steel. Fracture surfaces were examined to investigate the fatigue failure mechanism, which was found to be affected by the processing features generated by the friction stir welding tool.

Original language	English
Pages (from-to)	162-170
Number of pages	9
Journal	International Journal of Fatigue
Volume	81
Early online date	13 Aug 2015
DOIs	https://doi.org/10.1016/j.ijfatigue.2015.08.003
Publication status	Published - Dec 2015

Keywords

friction stir welding
low alloy steel
fatigue testing
residual stresses
fracture surface analysis

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10.1016/j.ijfatigue.2015.08.003

Polezhayeva-etal-IJFatigue-2015-Fatigue-performance-of-friction-stir-welded-marine-grade-steelAccepted author manuscript, 1.7 MBLicence: CC BY-NC-ND 4.0

Cite this

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title = "Fatigue performance of friction stir welded marine grade steel",

abstract = "An extensive study on the fatigue performance of friction stir welded DH36 steel was carried out. The main focus of this experimental testing programme was fatigue testing accompanied by tensile tests, geometry measurements, hardness and residual stress measurements, and fracture surface examination. The S-N curve for friction stir butt welded joints was generated and compared with the International Institute of Welding recommendations for conventional fusion butt welds. Friction stir welds of marine grade steel exceeded the relevant rules for fusion welding. This newly developed S-N curve is being proposed for use in the relevant fatigue assessment guidelines for friction stir welding of low alloy steel. Fracture surfaces were examined to investigate the fatigue failure mechanism, which was found to be affected by the processing features generated by the friction stir welding tool.",

keywords = "friction stir welding, low alloy steel, fatigue testing, residual stresses, fracture surface analysis",

author = "Helena Polezhayeva and Athanasios Toumpis and Alexander Galloway and Lars Molter and Bilal Ahmad and Fitzpatrick, {Michael E.}",

year = "2015",

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doi = "10.1016/j.ijfatigue.2015.08.003",

language = "English",

volume = "81",

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T1 - Fatigue performance of friction stir welded marine grade steel

AU - Polezhayeva, Helena

AU - Toumpis, Athanasios

AU - Galloway, Alexander

AU - Molter, Lars

AU - Ahmad, Bilal

AU - Fitzpatrick, Michael E.

PY - 2015/12

Y1 - 2015/12

N2 - An extensive study on the fatigue performance of friction stir welded DH36 steel was carried out. The main focus of this experimental testing programme was fatigue testing accompanied by tensile tests, geometry measurements, hardness and residual stress measurements, and fracture surface examination. The S-N curve for friction stir butt welded joints was generated and compared with the International Institute of Welding recommendations for conventional fusion butt welds. Friction stir welds of marine grade steel exceeded the relevant rules for fusion welding. This newly developed S-N curve is being proposed for use in the relevant fatigue assessment guidelines for friction stir welding of low alloy steel. Fracture surfaces were examined to investigate the fatigue failure mechanism, which was found to be affected by the processing features generated by the friction stir welding tool.

AB - An extensive study on the fatigue performance of friction stir welded DH36 steel was carried out. The main focus of this experimental testing programme was fatigue testing accompanied by tensile tests, geometry measurements, hardness and residual stress measurements, and fracture surface examination. The S-N curve for friction stir butt welded joints was generated and compared with the International Institute of Welding recommendations for conventional fusion butt welds. Friction stir welds of marine grade steel exceeded the relevant rules for fusion welding. This newly developed S-N curve is being proposed for use in the relevant fatigue assessment guidelines for friction stir welding of low alloy steel. Fracture surfaces were examined to investigate the fatigue failure mechanism, which was found to be affected by the processing features generated by the friction stir welding tool.

KW - friction stir welding

KW - low alloy steel

KW - fatigue testing

KW - residual stresses

KW - fracture surface analysis

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JO - International Journal of Fatigue

JF - International Journal of Fatigue

ER -

Fatigue performance of friction stir welded marine grade steel

Abstract

Keywords

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Alexander Galloway

HILDA (FP7 Transport)

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Fatigue performance of friction stir welded marine grade steel

Abstract

Keywords

UN SDGs

Access to Document

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Profiles

Alexander Galloway

Projects

HILDA (FP7 Transport)

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